Leaning-wheel road grader



Feb 10, 1931- A. J. MoNRol-:IET A1. 1,792,438

LEANING WHEEL ROAD GRADER Filed Sept. 6. 1929 5 Sheets-SheetA l F65. l0, 1931. A` 1 MONROE E1- AL 1,792,438

LEANING WHEEL ROAD GRADER Filed Sept. 6, 1929 5 Sheets-Sheet 2 INVENTOR ATTORNEY A. J. MONROE ET AL LEANING WHEEL ROAD GRADER Filed sept. 6, 1929 5 Sheets-sheet :5

nd/@Wf/Vozroe @Zarge L/fwzrae ATTORNEY Feb. l0, 1931.

n nE/j BE Patented Feb. 10, 1931 UNITED STATES PATENT joFFicE ANDREW J'. MONROE .AND GEORGE W. MONROE, OF ARTHUR, ILLINOIS LEANING-WI-IEEL ROAD GRADER Application filed September 6, 1929. `Serial No. 390,772.

The object of this invention is to provide means for controlling the wheels of a road grading machine, or other machine to which the construction may be suitably applied,-

for the purpose ofV preventing lateral movement occurring on a transverse grade or slope, or under other conditions, this control involving the movement of each wheel about a horizontal axis, the spindles being mounted to permit of control by vertically extending arms or the like.

A further obj ect is to provide for the movement of the vertically extending arms, simultaneously, so far as the wheels of each axle areV concerned, by suitable mechanism described below.

A further object is to effect the control last indicated by mechanism which will retain an adjusted position upon being operated manually or in any other suitable manner.

With the foregoing fand other objects in view, the invention consists in the novel construction and arrangement of elements dis- 2 view of the anism in elevation, with a worm shaft in transverse section.

Figure-5 is a vertical section on line 5-5 of Figure 4L.

Figure 6 is a perspective View of one of the brackets to be carried bythe axle, or by each axle, and adapted to mount the wheel spindle of Figure 7.

Figure 7 is a perspective view of one of closed, it being understood that modifications in elevation, from the rear of the machine and showingportions of the operating mech- Y tical direction.

the wheel spindlesfwith the operating arm' therefor extending upwardly fromf-theinner portion ofthe spindle.

The blade of the road'grading machine is designated 10, and is suitably mounted, as

for instance by means ofthe .device shown conventionally at 12,'this member '12. being Vmounted upon the main structurel of'fthe .machine, shown conventionally in Figure 1,

and not claimed in this case. It .may however be stated that the position of the blade mounting means including element13 of a movable frame, is adapted for control' in order to tilt the frame angularly, bynieans of upwardly extending links such -a's 14:, which 65 Ahave pivotal connection with L-shaped arms 15 controlled by crankarms 16 on longitudinal shafts 17,' these shafts being adapted for rotation :by suitable mechanism. 'Upon the rotation of shafts 17 manually, an equalizev 70 ing spring 18 extending'longitudinally of the machine, and connected with a stationary element at 19, acts thru a cable orf flexible device 20, connected with the aforesaid/tiltable frame, and assists in the lifting movementof the frame.

The present case relates chiefly to the leaning wheel mechanism, and-it will be observed Vthat a forward axle orv the like designated' 25, carries brackets or similar `elements26 ofthe 80 type shown in Figure`6, and 'these brackets -serve to mount wheel spindlesl27, having inner portions28 provided with horizontal bores 29 thru Vwhich the bolts or pins 29 extend. Each wheel spindle and the innen-poi`- tion y28 thereof is under the control of an-,upwardly extending arml 30, apertureds-'at its upper end as shown at 31Y and adapted for `'pivotal Vconnection-with means extending `transversely of the'machine, such as bar 33 90 for controlling the angular position of the spindle with reference to tilting movement in a vertical plane or in an approximately ver- Each element 33 carries a series of teeth 33', or has connection with a 95 rack bar on which the teeth are formed, aiid an elongated pinion 35 meshes with the teeth, and is carried by shaft 37 mounted in hearings atf 38, at the'lower end, and suitably mounted at its upper portion as shown at 39.

A housing 40 serves to enclose Worm gearing including the Wheel 41, and the Worm 42 formed on or carried by the shaft 43 extending longitudinally of the machine.

This shaft or rod 43 is under the control of a crank element 44 extending to the point Within reach of the operator Who Will be seated above a rear platform, the seat per se being designated 45.

The rear axle 50 of the machine carries Wheels 5l similarly mounted and adapted for tilting or leaning movement, and the rack and pinion mechanism corresponding with that shown in Figure 4, is operated in an equivalent manner, or by means of Worm 42 carried by a short shaft 43 and controlled by a crank 44. The housing for this Worm gearing is designated 40, being mounted above the rear platform 54 of the machine.

It is obvious that in view of the mechanism described, the Wheels are adapted to tilt or may be caused to lean in the required direction to prevent accidental movement transversely of the roadway, and it should be added that the front axle 50 is movable about the shaft 37 on which Worm Wheel 41 is mounted, this element 37 serving as a king pin for said front axle.

Figure 2 shows movement of rack bar 33 in a. vertical plane When it is shifted lengthwise, and this is effectively provided for by employing long pinion 35.

What is claimed is A leaning Wheel road grader including an axle, wheel spindles pivoted to the ends ofthe axle, Wheels journalled on the spindles, angularly disposed arms formed on the pivoted ends of the spindles, a pair of parallel bars pivot-ally connecting the arms and arranged at opposite sides of the axle, teeth formed on one of the bars, a vertical shaft journalled to the axle and extending above and below the bars, a Worm gear secured to the shaft, a Worm in mesh With the Worm gear, means to rotate the Worm in either direction, and an elongated gear secured to the shaft and in continuous mesh with the teeth and adapted to permit the bar carrying the teeth to move endWise relative to the shaft as Well as laterally thereof in either direction.

In testimony whereof tures.

We aiiix our signa- ANDREW J. MONROE. GEORGE W. MONROE. 

